enum DataType {
    Serial = 1,
    DataFrame = 2,
}


struct St_Query_Req {
    1:required string method_name,
    2:required binary params,
}

struct St_Query_Rsp {
      1:required bool status,
      2:optional string msg,
      5:optional string error,
}


service PingPong {
    St_Query_Rsp query(1:St_Query_Req rsp)
}



